Follow to discover the answer to today’s question:
How many are the books of the Old Testament and New Testament respectively?
131 “and such is the force and power of the Word of God that it can serve the Church as her support and vigour, and the children of the Church as strength for their faith, food for the soul, and a pure and lasting fount of spiritual life.”  Hence “access to Sacred Scripture ought to be open wide to the Christian faithful.” 
132 “Therefore, the study of the sacred page should be the very soul of sacred theology. the ministry of the Word, too – pastoral preaching, catechetics and all forms of Christian instruction, among which the liturgical homily should hold pride of place – is healthily nourished and thrives in holiness through the Word of Scripture.” 
133 The Church “forcefully and specifically exhorts all the Christian faithful… to learn the surpassing knowledge of Jesus Christ, by frequent reading of the divine Scriptures. Ignorance of the Scriptures is ignorance of Christ. 
109 DV 21.
110 DV 22.
111 DV 24.
112 DV 25; cf. Phil 3:8 and St. Jerome, Commentariorum in Isaiam libri xviii prol.: PL 24, 17B.
134 “All Sacred Scripture is but one book, and that one book is Christ, because all divine Scripture speaks of Christ, and all divine Scripture is fulfilled in Christ” (Hugh of St. Victor, De arca Noe 2, 8: PL 176, 642).
135 “The Sacred Scriptures contain the Word of God and, because they are inspired, they are truly the Word of God” (DV 24).
136 God is the author of Sacred Scripture because he inspired its human authors; he acts in them and by means of them. He thus gives assurance that their writings teach without error his saving truth (cf DV 11).
137 Interpretation of the inspired Scripture must be attentive above all to what God wants to reveal through the sacred authors for our salvation. What comes from the Spirit is not fully “understood except by the Spirit’s action’ (cf. Origen, Hom. in Ex. 4, 5: PG 12, 320).
138 The Church accepts and venerates as inspired the 46 books of the Old Testament and the 27 books of the New.
139 The four Gospels occupy a central place because Christ Jesus is their centre.
140 The unity of the two Testaments proceeds from the unity of God’s plan and his Revelation. the Old Testament prepares for the New and the New Testament fulfils the Old; the two shed light on each other; both are true Word of God.
141 “The Church has always venerated the divine Scriptures as she venerated the Body of the Lord” (DV 21): both nourish and govern the whole Christian life. “Your word is a lamp to my feet and a light to my path” ( Ps 119:105; cf. Is 50:4).
The answer to today’s question:
(CCC 138) The books of the Old Testament are 46 and the books of the New Testament 27.